ASTROSAT CZTI

Data Quality Report

Orbit 20200428_T03_197T01_9000003626_level2

Creation date: 2020-05-23T23:30:55.596705
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T03_197T01_9000003626cztM0_level2_bc.evt modeM0/AS1T03_197T01_9000003626cztM0_level2_quad_clean.evt
Size (bytes)5,732,697,6002,122,447,680
Size5.3 GB 2.0 GB
Events in quadrant A34,154,56213,614,688
Events in quadrant B51,663,91413,352,397
Events in quadrant C36,106,08313,205,126
Events in quadrant D40,668,27713,031,278

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02490
B02490
C02490
D02490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016470
B016470
C016470
D016470

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03339970
B04092630
C03446220
D03492750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16181916341.009770%
B161819108956.732831%
C16181931211.928698%
D16181816341.009776%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 186684 161829 5 5 0.00% 0.00%
B 186684 161749 1132 1132 0.61% 0.70%
C 186684 161823 17 17 0.01% 0.01%
D 186684 161825 101 101 0.05% 0.06%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 254 238804 121.42 8787 8647 1895.6
A 11 208 79977 37.63 8787 8647 1895.6
A 3 1 57788 25.92 8787 8647 1895.6
B 3 64 17080930 10686.09 8516 8334 1597.6
B 0 189 932846 578.67 8516 8334 1597.6
B 7 202 309949 188.79 8516 8334 1597.6
C 7 247 1791605 906.87 8380 8369 1966.4
C 2 16 782073 393.47 8380 8369 1966.4
C 10 91 655687 329.2 8380 8369 1966.4
D 8 195 4671816 2351.2 8613 8323 1983.4
D 1 52 2242180 1126.25 8613 8323 1983.4
D 2 234 618766 307.77 8613 8323 1983.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter